Trans-iliac connector

ABSTRACT

A spine stabilization implant includes a first portion having a first fixed angulated extension, a first rod receiving element and a connecting element. The implant also includes a second portion having a second fixed angulated extension, a second rod receiving element, and a receiving portion for receiving the connecting element of the first portion. The second portion is configured with a locking assembly for locking the first portion and second portion to one another.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application is a non-provisional application which is acontinuation application of U.S. patent application Ser. No. 12/902,789filed on Oct. 12, 2010, which claims the benefit of priority of U.S.Provisional Application Ser. No. 61/250,738 filed on Oct. 12, 2009, theentire contents of which is hereby expressly incorporated by referenceinto this disclosure as if set forth fully herein.

FIELD OF THE INVENTION

The present invention relates to a spinal implant that stabilizes andsupports the spine.

BACKGROUND OF THE INVENTION

Spinal deformities, spinal injuries, and other spinal conditions may betreated with the use of spinal implants. Spinal implants are designed tosupport the spine and properly position the components of the spine. Onesuch spinal implant includes an elongated rod and a plurality of boneanchors. The elongated rod is positioned to extend along one or more ofthe components of the spine and the bone anchors are attached to thespinal components at one end and secured to the elongated rod at theother end. There is a need for a spinal implant that enables fusion andstability of the spine at the iliac portion of the spine.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be more readily understood with reference to theembodiments thereof illustrated in the attached drawing figures, inwhich:

FIG. 1 illustrates the iliac connector according to one embodiment ofthe present invention;

FIG. 2 illustrates a cross-sectional view of the iliac connector shownin FIG. 1;

FIG. 3 illustrates a spine stabilization system according to the presentinvention;

FIGS. 4 and 5 illustrate yet another spine stabilization systemaccording to the present invention;

SUMMARY OF THE INVENTION

A spine stabilization implant includes a first portion having a firstfixed angulated extension, a first rod receiving element and aconnecting element. The implant also includes a second portion having asecond fixed angulated extension, a second rod receiving element, and areceiving portion for receiving the connecting element of the firstportion. The second portion is configured with a locking assembly forlocking the first portion and second portion to one another.

DETAILED DESCRIPTION OF THE INVENTION

Embodiments of the invention will now be described. The followingdetailed description of the invention is not intended to be illustrativeof all embodiments. In describing embodiments of the present invention,specific terminology is employed for the sake of clarity. However, theinvention is not intended to be limited to the specific terminology soselected. It is to be understood that each specific element includes alltechnical equivalents that operate in a similar manner to accomplish asimilar purpose.

FIG. 1 illustrates a trans-iliac connector 10 according to oneembodiment of the present invention. The connector 10 is configured anddimensioned to span the iliac crest medial/laterally. More specifically,the connector 10 includes a male portion 12 and a female portion 14. Themale portion 12 of the connector 10 is received into the female portion14 of the connector 10 and locked into placed using a set screw 16. Themale portion 12 is configured with an extension 18 and can be rotatedand adjusted translationally depending on the anatomy of the patient. Inone embodiment, the male portion 12 may pivot in any direction withrespect to the female portion 14 of the connector. The male portion 12also includes a portion which extends distally in a fixed angle withrespect to the extension 18. The male portion 12 also includes a rodreceiving element 20 for receiving an elongated rod. The rod receivingelement 20 is configured and adapted to capture and retain an elongatedrod. The rod receiving element 20 is designed and configured to receivea locking cap which secures the elongated rod within the rod receivingelement 20.

The female portion 14 is also configured with a rod receiving element 22for receiving a second elongated rod. The rod receiving element 22 isalso configured to receive a locking cap for capturing and retaining asecond elongated rod. The female portion 12 also includes a receivingportion 24 which is configured and adapted to receive the extension 18of the male portion 12. The female portion 14 is also configured with alocking assembly 26 for locking the male portion 12 to the femaleportion 14. FIG. 2 illustrates the connector 10 fully assembled and in alocked position. The male portion 12 is adapted to fit within the femaleportion 14 of the connector 10, as illustrated. The locking assembly isthen utilized to lock male portion 12 with the female portion 14.Although, FIGS. 1 and 2 illustrate on embodiment of the presentinvention, it should be noted that any type of connection assembly suchas clamps, collets, and/or set screws may be used to lock the maleportion 12 to the female portion 14.

Now turning to FIGS. 3-5, it should be noted that the connector 30 isused in conjunction with bone screws to anchor into the Ilium. Theconnector 30 is adjustable in width and has rotational capabilities toaid in construct placement. As mentioned above, the connector 30 isadjustable laterally and rotationally and is locked in place with a setscrew. Implantable rods 34 are placed into screw heads having rodreceiving elements 36 such as tulips built into the connector 30 andlocked in place with screw locking caps 38. Further construction iscompleted using rod/pedicle screw configurations. The connector 30 isable to provide solid anchorage in the sacro-iliac anatomy with a singleimplant that also acts as a cross connector. In addition, the attachingarms allow for superior stiffness and additional stability based uponthe stiffness. It should be noted that the composition of the system mayinclude titanium and stainless steel, however, the system is not limitedto these materials. For example, any type of material such as plastic orPEEK may also be used.

In this system, the connector 30 is coupled to at least two bone anchors32. The extension of the male portion 34 and the female portion 34 arecoupled to each one of the bone anchors 32. Each bone anchor 32 isattached to the iliac crest thereby providing support across the sacrumof the spine. First, a bone anchor in inserted on both sections of theiliac crest. A surgeon generally accomplishes this task my measuring andcalculating the position of the bone anchors based on the patient'sanatomy and the dimensions of the cross connector required. Once thebone anchors are positioned, the male and female portion of theconnector are attached and positioned within the tulips of the boneanchors. The connector is then adjusted and locked using the lockingassembly of the connector. Then, the connector is locked into positionwithin the tulips of the bone anchors.

FIGS. 4 and 5 illustrate a spinal stabilization system 42 according tothe present invention. This system 42 includes a cross-connector 44, atleast two elongated rods 46 and a plurality of bone anchors 48. Thissystem 42 addresses the fusion and spinal fixation in the sacrum portionof the spine. The present fixation system is configured and dimensionedto span the iliac crest providing secure sacro-iliac fixation to enhancecontact for spinal fusion. The present system utilizes bone screws 48 oranchors such as dual outer diameter screws to anchor the connector 44 inthe anatomy laterally. A connection can then be made using the elongatedrods 46 that can be positioned within the tulip heads of the bone screws48. In addition the system 42 provides a structural base so that theconnector acts as its own cross link to provide a “box” constructionusing a single implant. The connector 42 is adjustable medial/lateral toaccommodate varying anatomic challenges. It should be noted that otherconfiguration and adaptations of the connector with elongated rod andscrews may be utilized to stabilize the spine. For instance, variousangled rods and screws may be used to accommodate the anatomy of apatient's spine.

Example embodiments having the components of the present invention havebeen described herein. As noted, these example embodiments having beendescribed for illustrative purposes only, and are not limiting. Otherembodiments are possible and are covered by the invention. Suchembodiments will be apparent to persons skilled in the relevant artbased on the teachings contained herein. Thus, the breadth and scope ofthe present invention should not be limited by any of theabove-described exemplary embodiments, but should be defined only inaccordance with the following claims and their equivalents.

We claim:
 1. A spine stabilization implant comprising: a first portionhaving a first fixed angulated extension, a first rod receiving elementand a connecting element, wherein the first rod receiving element ismonolithically formed with the first portion and the first fixedangulated extension, wherein the first fixed angulated extension has afirst longitudinal axis and the connecting element has a centrallongitudinal axis, wherein the first longitudinal axis is at an anglerelative to the central longitudinal axis, wherein the first fixedangulated extension is formed such that the angle is fixed andnon-bendable; and a second portion having a second fixed angulatedextension, a second rod receiving element, and a receiving portion forreceiving the connecting element of the first portion, wherein thesecond fixed angulated extension has a second longitudinal axis and thereceiving portion has a central longitudinal axis, wherein theconnecting element is receivable and rotatable within the receivingportion; wherein the second portion is configured with a lockingassembly for locking the first portion and second portion to oneanother, wherein the first rod receiving element and the second rodreceiving element extend above the central longitudinal axis of theconnecting element, wherein an opening of the first rod receivingelement and an opening of the second rod receiving element each define acentral axis, wherein the central axis of the first rod receivingelement is positioned generally perpendicular to the centrallongitudinal axis of the connecting element, wherein the central axis ofthe second rod receiving element is positioned generally perpendicularto the central longitudinal axis of the receiving portion, and wherein afirst elongate rod is received within the first rod receiving elementabove the central longitudinal axis of the connecting element and asecond elongate rod is received within the second rod receiving elementabove the central longitudinal axis of the receiving portion.
 2. Thespine stabilization implant according to claim 1, wherein the lockingassembly further comprises a set screw.
 3. The spine stabilizationimplant according to claim 1, wherein the implant is comprised oftitanium.
 4. The spine stabilization implant according to claim 1,wherein the implant is comprised of PEEK.
 5. The spine stabilizationimplant according to claim 1, wherein the locking assembly is a clamp.6. A spine stabilization system comprising: a cross-connectorcomprising: a first portion with a first fixed angulated extension, afirst rod receiving element and a connecting element, wherein the firstrod receiving element is monolithically formed with the first portionand the first fixed angulated extension, wherein the first fixedangulated extension has a first longitudinal axis and the connectingelement has a central longitudinal axis, wherein the first longitudinalaxis is at an angle relative to the central longitudinal axis, whereinthe first fixed angulated extension is formed such that the angle isfixed and non-bendable; a second portion having a second fixed angulatedextension, a second rod receiving element, and a receiving portion,wherein the connecting element is receivable and rotatable within thereceiving portion; wherein the second fixed angulated extension has asecond longitudinal axis and the receiving portion has a centrallongitudinal axis, wherein the second portion is configured with alocking assembly for locking the first portion and second portion to oneanother, a first bone anchor coupled to the first fixed angulatedextension and second bone anchor coupled to the second fixed angulatedextension, wherein the first rod receiving element and the second rodreceiving element extend above the central longitudinal axis of theconnecting element, wherein an opening of the first rod receivingelement and an opening of the second rod receiving element each define acentral axis, wherein the central axis of the first rod receivingelement is positioned generally perpendicular to the centrallongitudinal axis of the connecting element, wherein the central axis ofthe second rod receiving element is positioned generally perpendicularto the central longitudinal axis of the receiving portion, and wherein afirst elongate rod is received within the first rod receiving elementabove the central longitudinal axis of the connecting element and asecond elongate rod is received within the second rod receiving elementabove the central longitudinal axis of the receiving portion.
 7. Thespine stabilization system according to claim 6, wherein the lockingassembly further comprises a set screw.
 8. The spine stabilizationsystem according to claim 6, wherein the cross-connector is comprised oftitanium.
 9. The spine stabilization system according to claim 6,wherein the cross-connector is comprised of PEEK.
 10. The spinestabilization system according to claim 6, wherein the locking assemblyis a clamp.
 11. The spine stabilization system according to claim 6,wherein the first and second rod receiving elements comprise a first andsecond locking cap for retaining and capturing the first and secondelongated rods.